versioning-apis

This skill provides automated assistance for managing API versioning with an emphasis on backward compatibility, controlled deprecation, and clear migration paths. It is designed to support teams that maintain evolving APIs and need a structured way to introduce changes without breaking existing consumers. By guiding users through examining existing API specifications, defining resources, and documenting schemas, the skill helps reduce the risk and complexity typically associated with API evolution. It focuses on process and structure rather than inventing new APIs, ensuring changes are deliberate, traceable, and well-documented.

The main capabilities of this skill center on end-to-end API versioning workflows. It supports reading existing API specifications, defining endpoints and models, documenting request and response schemas, and identifying authentication and authorization requirements. It also assists with generating boilerplate code through predefined tooling, implementing handlers, adding validation, integrating middleware, and configuring supporting infrastructure such as databases. In addition, the skill emphasizes testing and documentation by encouraging integration tests and the production of a complete OpenAPI 3.0 specification. Error handling and examples are explicitly referenced to ensure consistency and reliability across versions.

This skill is well suited for backend developers, API designers, and platform engineers responsible for maintaining public or internal APIs over time. Typical use cases include introducing a new API version while keeping older versions operational, planning deprecation notices for outdated endpoints, and guiding consumers through migration paths. It is applicable across multiple technology stacks, including Node.js, Python, Java, and Go, making it useful for teams working in heterogeneous environments. Overall, it targets users who need a repeatable, documented approach to API versioning rather than ad hoc changes.